A huge flying reptile that died out with the dinosaurs some 65 million years ago, the Quetzalcoatlus had a wingspan of 36 feet, believed to be the largest flying creature the world has ever seen.
(A) believed to be
(B) and that is believed to be
(C) and it is believed to have been
(D) which was, it is believed,
(E) which is believed to be
I ruled out D and E as "which" was incorrectly refering to wingspan (Rule: Which should always refer to the noun preceding it).
I ruled out C because it use "Have been" should be used with a plural subject -------- AM I CORRECT about this??
B was ruled out because it uses that and it again refers to wingspan.
I chose A.
The OA is C.